Python/Twisted: exceptions.RuntimeError: doWrite called on a twisted.internet.tcp.Port -

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we have gem of exception being thrown during start-up of application, when clients aren't connected or trying connect, when clients start connect once system has initialised,

[twisted.spread.pb.pbserverfactory] unhandled error     traceback (most recent call last):       file "/usr/lib/python2.7/dist-packages/twisted/python/log.py", line 88, in callwithlogger         return callwithcontext({"system": lp}, func, *args, **kw)       file "/usr/lib/python2.7/dist-packages/twisted/python/log.py", line 73, in callwithcontext         return context.call({ilogcontext: newctx}, func, *args, **kw)       file "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callwithcontext         return self.currentcontext().callwithcontext(ctx, func, *args, **kw)       file "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callwithcontext         return func(*args,**kw)     --- <exception caught here> ---       file "/usr/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 619, in _doreadorwrite         why = selectable.dowrite()       file "/usr/lib/python2.7/dist-packages/twisted/internet/base.py", line 1117, in dowrite         "dowrite called on %s" % reflect.qual(self.__class__))     exceptions.runtimeerror: dowrite called on twisted.internet.tcp.port [twisted.spread.pb.pbserverfactory] (tcp port 37605 closed) [twisted.spread.pb.pbserverfactory] stopping factory <twisted.spread.pb.pbserverfactory instance @ 0x7f25262bcab8>

the application written in python 2.7.6 twisted 13.2.0 on ubuntu 14.04 64-bit, kernel 3.13.0-34. not see exception when running same code on windows 7 , ubuntu 10.04, have not tried on other os's.

the performance of system unpredictable @ best when exception thrown. in instances there seems no noticeable loss in performance , clients can connect , disconnect @ , data communication integrity solid , software works. in other instances clients can connect once on port , when client disconnected client can not longer connect on port. there times when clients cannot connect port @ all, if reactor stops listening on port??

i can't see reference code in traceback, i'm @ loss start looking fix.

the best reference have found issue here, however, thread seems go without solution?

has run before , found fix, or work around or had fir of rage , tossed computer out window?

cheers


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